File-cutting machine



(No Model) W. MoOLELLAN I FILE GUTTING MACHINE. No. 276,698. PatentedMay 1,1883;

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UNITED STATES PATENT QFFICE.

WILLIAM MCULELLAN, OF EAST SAGINAV, MICHIGAN.

FILE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 276,698, dated May 1, 1883. Application filed December 15, 1882. (No model.)

To all whom it may concern Beit known that I, WILLIAM MOCLELLAN, of East Saginaw, in the county of Saginaw and State of Michigan, haveinven ted new and useful Improvements in File-Cutting Machines; and I do hereby declare that the following is a full, clear, and exactdescription thereof, refeience being bad to the accompanying draw ings, which form a part of this specification.

The nature of this invention relates to certain new and useful improvements in the construction of machines for automatically cutting files.

The invention consists in the peculiar construction of the standard which carries the plunger and chisel, and by means of which the desired inclination of the chisel is obtained; in the peculiar construction and arrangement of parts for securing the plunger between its vertical guides; in the peculiar arrangement of an adjustable bracket which carries the main shaft, and in the peculiar construction, arrangement, and combinations of the various parts, all as more fully hereinafter set forth.

Figure 1 is a perspective view of my improved file-cutter. Fig. 2 is a perspective of the bed-plate and standard detached, showing the means for securing the adjustment of the standard upon the bed, and also showing the adjustable bearing for the main shaft. Fig. 3 is a cross-section on the line 00 m in Fig. 1, through the plunger and its guides.

In theaccoinpanyin g drawings, Arepresents the bed of the machine, which is properly bolted or otherwise rigidly secured upon a suitable foundation. Upon the rear side of this bed there is formed, the slight projection a, to which the adjustable standard Bis secured in the following manner:

(3 represents a bolt or pin, which is rigidly secured in the lower end of the standard B, while the oppositeend of such bolt is designed to enter the recess b in the bed. Projecting from such bed-plate are the bolts D, the outer ends of: which project through the radial or segmental slots 0 in the lower end of the standard B and receive proper nuts to secure said standard in its adjusted position, as hereinafter described. Near the upper end of this standard B are rigidly secured the plates or convenient power.

reciprocation by the gib H, which fits into a channel in the arm F, and such plunger is operated by a cam upon.the main shaft in the usual manner. The gib His retained in the arm F against vertical displacement by means the bolts I, which are tapped through the arm F, the inner ends of the bolts entering recesses in the outer face of the gib.

Upon one end of the bed A is rigidlysecured the box-bracket J, in which is properly jour naled a shaft, one end of which carries the grooved pulley K, which receives motion by means of a belt, L, from a pulley upon the main shaft, which in turn is driven from any The opposite end of this shaft carries a bevel-gear, M, which meshes with a bevel-gear, N, secured ugon the feedscrew shaft O,journaled in bearings at the side ofthe bed-plate.

P represents the table, upon which the blank is secured in the usual manner, and this table rests and travels upon the bevel-ways e of the bed. Pivotally secured on the outer side of the table P is the drop-nut R, which engages with the feed-screw shalt O, and which in the operation of the machine automatically feeds the table with the blank to the chisel S, which is secured in the lower end of the plunger G. At any time that the operator may desire he may release the drop-nut from its engagement with the feed-screw 0, when a weight attached to the lower end of the rope T, the opposite end of which is secured to the table, will quickly draw such table back to its original position, ready to receive a new blank, as may be desired. V

The main shaft'is properlyjournaled through a bracket, U, secured upon the outer face of the standard B, by means of bolts 11-, which pass through slots in the bracket and are tapped into the standard. At the lower end of this bracket is formed a lug, 2', through which is threaded the set-screw V,which .is properly sleeved or otherwise secured in the lug k, which projects at right angles from the face of the standard.

In practice the machine is provided with a suitable spring for projecting the plunger as it is released from the cam in the ordinary manner. The blank is secured upon the table P, and the standard is adjusted upon the bed A at the inclination required to cut the necessary tooth upon the blank to form the particular class of tile desired. The plunger is adjusted between the guide and gib by turning up the center screw, I, so that there will be no lost motion in the reciprocation 0f the plunger, while the outer screws I are retracted very slightly. By this means of adjustment a very slight yielding movement is provided for at the completion of the stroke of the plunger, so that as the tooth has been cut the chisel will spring or yield in the line of its inclination, and cause the tooth of the file to slightly rise or hook; and it can readily be seen that by this adjustment any desired hook to the file-tooth may be formed by adjusting the plunger to or from the vertical center of the shaft.

It will be observed that by providing for a vertical adjustment of the main shaft by means of the vertically-adjustable bracket I am able to minutely adjust and fix the. throw of the plunger and chisel, so that as the chisel is worn away and ground down I can readily set the operating parts to givea uniform depth of cut in the blank being operated upon. By pivoting the standard to the bed this vertical adjustment is more readily attained than if the shaft were running in a fixed standard and the plunger in independently-moving guides.

I am aware of the patents Nos. 13,310 and 239,412, and make no claim to the construction therein shown.

What I claim as my invention is 1. The combination of the standard adapted to support and adjust the chisel-plunger'to the desired inclined position with the shaft and cam, and means, substantially as described, for supporting and vertically adjusting the cam and shaft,as set forth.

2. In a machine for cutting files, the standard B, pivoted to the bed A, and constructedto admit of the vertical adjustment of the shaft and cam, whereby the rise of the plunger andchisel is changed, substantially as described. v 3. In a file-cutting machine, and in combination with the adjustable standard B and main shaft-thereof, the vertically-adjustable bracket U, through which the main shaft-is journaled, substantially as and for the pur poses set forth.

WILLIAM MOOLELLAN. Witnesses 'H. S. SPRAGUE,

E. I. ScULLY. 

